.start-building-section {
  width: 100%;
  padding: 80px 0;
  background: transparent;
  position: relative;
  z-index: 22;
}

.start-building-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.start-building-card {
  width: 100%;
  max-width: 1200px;
  user-select: none;
  margin: 0 auto;
  background: linear-gradient(135deg, rgba(124, 58, 237, 1), rgba(24, 47, 255, 0.6));
  background-size: 200% 200%;
  border-radius: 50px;
  padding: 4rem 3rem;
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.5);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.start-building-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('/assets/demo/grain.webp');
  filter: brightness(3);
  background-size: 500px 500px;
  mix-blend-mode: lighten;
  background-repeat: repeat;
  opacity: 1;
  pointer-events: none;
  z-index: 1;
}

.start-building-card > * {
  position: relative;
  z-index: 2;
}

.start-building-title {
  color: white;
  font-size: 3rem;
  font-weight: 500;
  line-height: 1;
}

.start-building-subtitle {
  color: white;
  font-size: 1.2rem;
  font-weight: 500;
  opacity: 0.6;
  max-width: 600px;
  line-height: 1;
}

.start-building-button {
  background: transparent;
  background: white;
  border: 1px solid white;
  color: #7c3aed;
  padding: 0.6rem 1.8rem;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: -0.2px;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.start-building-button:hover {
  background: white;
  color: #7c3aed;
}

@media (max-width: 1280px) {
  .start-building-container {
    max-width: 1000px;
    padding: 0 30px;
  }

  .start-building-card {
    padding: 2.5rem;
  }
}

@media (max-width: 768px) {
  .start-building-section {
    padding: 60px 0;
  }

  .start-building-container {
    padding: 0 20px;
  }

  .start-building-card {
    padding: 3rem 2rem;
    gap: 1.25rem;
  }

  .start-building-title {
    font-size: 2rem;
  }

  .start-building-subtitle {
    font-size: 1.1rem;
  }

  .start-building-button {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .start-building-section {
    padding: 40px 0;
  }

  .start-building-container {
    padding: 0 16px;
  }

  .start-building-card {
    padding: 2.5rem 1.5rem;
    gap: 1rem;
  }

  .start-building-title {
    font-size: 1.5rem;
  }

  .start-building-subtitle {
    font-size: 1rem;
    margin: 0;
    padding: 0 0.6rem;
  }

  .start-building-button {
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
  }
}
